Rtp conversion charmm36

GROMACS version:2022
GROMACS modification:No
Hello all,

I am having trouble converting my modified residue to rtp format.

I methylated my residue

ATOM    781  N   ARG A 130       8.714  54.987   2.676  1.00 47.63           N  
ATOM    782  CA  ARG A 130       9.061  56.391   2.868  1.00 47.63           C  
ATOM    783  C   ARG A 130       9.052  57.092   1.516  1.00 47.63           C  
ATOM    784  O   ARG A 130       8.614  58.234   1.401  1.00 47.63           O  
ATOM    785  CB  ARG A 130      10.437  56.528   3.519  1.00 76.92           C  
ATOM    786  CG  ARG A 130      10.508  55.943   4.915  1.00 76.92           C  
ATOM    787  CD  ARG A 130      11.825  56.267   5.593  1.00 76.92           C  
ATOM    788  NE  ARG A 130      11.900  55.657   6.916  1.00 76.92           N  
ATOM    789  CZ  ARG A 130      12.901  55.838   7.770  1.00 76.92           C  
ATOM    790  NH1 ARG A 130      13.923  56.618   7.443  1.00 76.92           N1+
ATOM    791  NH2 ARG A 130      12.882  55.239   8.953  1.00 76.92           N  
ATOM    792  C01 ARG A 130      13.991  55.440   9.897  0.00  0.00           C  
ATOM    793  C02 ARG A 130      11.752  54.374   9.321  0.00  0.00           C  
ATOM    794  H02 ARG A 130      14.312  54.511  10.265  0.00  0.00           H  
ATOM    795  H05 ARG A 130      11.340  54.701  10.229  0.00  0.00           H  
ATOM    796  H03 ARG A 130      13.667  56.040  10.695  0.00  0.00           H  
ATOM    797  H06 ARG A 130      12.088  53.384   9.424  0.00  0.00           H  
ATOM    798  H04 ARG A 130      14.787  55.915   9.404  0.00  0.00           H  
ATOM    799  H07 ARG A 130      11.020  54.417   8.569  0.00  0.00           H  

then used cgenff to generate a itp to convert to an rtp

;    Atom    type     charge		
       O2    OG2D1 -0.548    1    ;carbonyl O
       N    NH1   -0.4700    2    ;peptide nitrogen
       N2    NG2D1 -0.824    3    ;N for neutral imine/Schiff's base C=N-R
       N3    NG301 -0.137    4    ;neutral trimethylamine nitrogen
       N4    NG321 -0.502    5    ;neutral methylamine
       C1    CG321 -0.281    6    ;C for CH2
       C3    CG321 -0.196    7    ;C for CH2
       C4    CG311  0.326    8    ;ch
       C5    CG321  0.015    9    ;C for CH2
       C2    CG2O2  0.779   10    ;carbonyl C peptide backbone
       C6    CG2N1  0.500   11    ;conjugated C in guanidine
       C7    CG331 -0.207   12    ;C for methyl group CH3
       C8    CG331 -0.207   13    ;C for methyl group CH3
       H1     HGA2  0.090   14    ;alphatic proton, CH2
       H2     HGA2  0.090   15    ;alphatic proton, CH2
       H3     HGA2  0.090   16    ;alphatic proton, CH2
       H4     HGA2  0.090   17    ;alphatic proton, CH2
       H5     HGA1  0.090   18    ;alphatic proton, CH
       H6     HGA2  0.090   19    ;alphatic proton, CH2
       H7     HGA2  0.090   20    ;alphatic proton, CH2     
      H10     HGA3  0.090   23    ;alphatic proton, CH3
      H11     HGA3  0.090   24    ;alphatic proton, CH3
      H12     HGA3  0.090   25    ;alphatic proton, CH3
      H13     HGA3  0.090   26    ;alphatic proton, CH3
      H14     HGA3  0.090   27    ;alphatic proton, CH3
      H15     HGA3  0.090   28    ;alphatic proton, CH3

Because I have to add hydrogens for cgenff and the atom names dont carry over I have lost track of my hydrogens. Can someone help me with the error when I use pdb2gmx

Fatal error:
Atom N in residue AMA 130 was not found in rtp entry AMA with 32 atoms
while sorting atoms.
.

is there a way to label files when switiching formats from pdb to mol2 to str to itp

since I have tried to label my mol2 and rtp could someone tell me why there is an error in applying my rtp to my pdb?

rtp

; Name			 
[ AMA ]			

[ atoms ]
;	 nr		  type	resnr residue  atom   cgnr	   charge		mass  typeB    chargeB		massB
     N1      NG321      -1.081   ;neutral methylamine
     C1      CG311       0.369   ;ch
     C2      CG2O4       0.142   ;carbonyl C aldehyde
     O1      OG2D1      -0.389    ;carbonyl O
     C3      CG321      -0.196    ;C for CH2
     C4      CG321      -0.196    ;C for CH2
     C5      CG321       0.015    ;C for CH2
     N2      NG2D1      -0.824    ;N for neutral imine/Schiff's base C=N-R
     C6      CG2N1       0.500    ;conjugated C in guanidine
     N3      NG321      -0.502  ;neutral methylamine
     N4      NG301      -0.137    ;neutral trimethylamine nitrogen
     C7      CG331      -0.207    ;C for methyl group CH3
     C8      CG331      -0.207    ;C for methyl group CH3
     H1       HGA3       0.090    ;alphatic proton, CH3
     H2       HGA3       0.090    ;alphatic proton, CH3
     H3       HGA3       0.090    ;alphatic proton, CH3
     H4       HGA3       0.090    ;alphatic proton, CH3
     H5       HGA3       0.090    ;alphatic proton, CH3
     H6       HGA3       0.090   ;alphatic proton, CH3
     H7       HGA2       0.090    ;alphatic proton, CH2
     H8       HGA2       0.090    ;alphatic proton, CH2
     H9     HGPAM2       0.330    ;polar H, NEUTRAL methylamine
    H10       HGA2       0.090    ;alphatic proton, CH2
    H11       HGA2       0.090    ;alphatic proton, CH2
    H12     HGPAM2       0.330    ;polar H, NEUTRAL methylamine
    H13       HGA2       0.090    ;alphatic proton, CH2
    H14       HGA2       0.090    ;alphatic proton, CH2
    H15     HGPAM2       0.396    ;polar H, NEUTRAL methylamine
    H16     HGPAM2       0.396    ;polar H, NEUTRAL methylamine
    H17       HGA1       0.090    ;alphatic proton, CH
    H18      HGR52       0.091    ;   Aldehyde H, formamide H (RCOH

pdb

ATOM    781  N1  AMA A 130       8.714  54.987   2.676  1.00 47.63           N  
ATOM    782  C1  AMA A 130       9.061  56.391   2.868  1.00 47.63           C  
ATOM    783  C2  AMA A 130       9.052  57.092   1.516  1.00 47.63           C  
ATOM    784  O1  AMA A 130       8.614  58.234   1.401  1.00 47.63           O  
ATOM    785  C3  AMA A 130      10.437  56.528   3.519  1.00 76.92           C  
ATOM    786  C4  AMA A 130      10.508  55.943   4.915  1.00 76.92           C  
ATOM    787  C5  AMA A 130      11.825  56.267   5.593  1.00 76.92           C  
ATOM    788  N2  AMA A 130      11.900  55.657   6.916  1.00 76.92           N  
ATOM    789  C6  AMA A 130      12.901  55.838   7.770  1.00 76.92           C  
ATOM    790  N3  AMA A 130      13.923  56.618   7.443  1.00 76.92           N1+
ATOM    791  N4  AMA A 130      12.882  55.239   8.953  1.00 76.92           N  
ATOM    792  C7  AMA A 130      13.991  55.440   9.897  0.00  0.00           C  
ATOM    793  C8  AMA A 130      11.752  54.374   9.321  0.00  0.00           C  
ATOM    794  H1  AMA A 130      14.312  54.511  10.265  0.00  0.00           H  
ATOM    795  H2  AMA A 130      11.340  54.701  10.229  0.00  0.00           H  
ATOM    796  H3  AMA A 130      13.667  56.040  10.695  0.00  0.00           H  
ATOM    797  H4  AMA A 130      12.088  53.384   9.424  0.00  0.00           H  
ATOM    798  H4  AMA A 130      14.787  55.915   9.404  0.00  0.00           H  
ATOM    799  H7  AMA A 130      11.020  54.417   8.569  0.00  0.00           H  
Fatal error:
Residue 100 named AMA of a molecule in the input file was mapped
to an entry in the topology database, but the atom C used in
that entry is not found in the input file. Perhaps your atom
and/or residue naming needs to be fixed.